CVE-2023-39534 — eprosima Fast DDS is a C++ implementation of the Data Distribution Service stand

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.10.0, 2.9.2, and 2.6.5, a malformed GAP submessage can trigger assertion failure, crashing FastDDS. Version 2.10.0, 2.9.2, and 2.6.5 contain a p

01What is this vulnerability?

eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.10.0, 2.9.2, and 2.6.5, a malformed GAP submessage can trigger assertion failure, crashing FastDDS. Version 2.10.0, 2.9.2, and 2.6.5 contain a patch for this issue.

02Affected products

Vendor	Product	Versions
eProsima	Fast	DDS — < 2.6.5, >= 2.7.0, < 2.9.2

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-08-11T13:12:00.633Z
• Last modified: 2025-02-13T17:03:12.902Z

09References

• github.com — https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-fcr6-x23w-94wp
• bombshell.gtisc.gatech.edu — https://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-assert-230509.pcap
• github.com — https://github.com/eProsima/Fast-DDS/blob/v2.9.1/include/fastdds/rtps/common/Seq…
• github.com — https://github.com/eProsima/Fast-DDS/blob/v2.9.1/src/cpp/rtps/reader/StatefulRea…
• www.debian.org — https://www.debian.org/security/2023/dsa-5481